Anti-blocking slag device for triggering circulating fluidized bed

Abstract

The utility model discloses a triggering circulating fluidized bed anti-blocking slag device which comprises a slag cooler body, a water supply pipe and a water return pipe are arranged on the slag cooler body, a DCS electronic room DPU cabinet and an upper computer are arranged on one side of the slag cooler body, the DCS electronic room DPU cabinet is electrically connected with the upper computer, the water supply pipe and the water return pipe are both provided with temperature measuring points connected with the DCS electronic room DPU cabinet, and the upper computer is electrically connected with the DCS electronic room DPU cabinet. The temperature measuring assemblies are installed on the water supply pipe and the water return pipe, the temperature sensor is fixedly installed outside the water supply pipe through the installation assembly, and the protection assembly is installed outside the temperature sensor through the installation assembly. The water supply pipe, the water return pipe and the temperature measurement assembly are used in a matched mode, the temperature measurement assembly comprises the temperature sensor, the installation assembly and the protection assembly, and under the action of the installation assembly, the protection assembly and the temperature sensor can be stably installed outside the water supply pipe and the water return pipe. And the protection assembly can protect the temperature sensor, so that the temperature sensor is prevented from being collided and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating fluidized bed slag, in particular to a triggered circulating fluidized bed slag blocking prevention device. Background Art

[0002] Circulating fluidized bed boiler technology is a high-efficiency, low-pollution, clean combustion technology that has developed rapidly in the past decade. Circulating fluidized bed boilers have the characteristics of high reliability, high stability, high availability, optimal environmental protection characteristics and wide fuel adaptability, especially strong adaptability to inferior fuels, and are receiving more and more widespread attention. However, in daily operation, circulating fluidized bed boilers have the phenomenon of slag cooler blockage. The solution to the blockage is mainly to manually poke the slag to clear the blocked part, which not only increases the labor intensity of the slag pokeers, but also increases the risk of scalding for the operators. In addition, long-term slag blockage has a direct impact on the safe and economical operation of the unit.

[0003] When the circulating fluidized bed is working, it needs to be tested for blockage. When testing the circulating fluidized bed for blockage, the water temperature is usually tested directly on the water supply pipe and return pipe of the circulating fluidized bed. Since the water supply pipe supplies cooling water to the inside of the circulating fluidized bed, the water absorbs a certain amount of heat when cooling the slag inside the circulating fluidized bed, so that the water temperature inside the return pipe and the water supply pipe has a certain stability. However, when the circulating fluidized bed is blocked, the slag inside the circulating fluidized bed has been cooled, so that the temperature difference between the supply pipe and the return pipe is reduced, thereby judging whether the circulating fluidized bed is blocked. However, when testing the temperature of the supply pipe and the return pipe, a through hole is usually directly opened on the outer wall of the pipe, and then the temperature sensor is installed on the pipe. However, when the temperature sensor is directly installed on the pipe, when it is hit, the connection between the temperature sensor and the pipe will loosen and leak, which is inconvenient to shield and protect it during installation. Utility Model Content

[0004] The utility model aims to provide a triggered circulating fluidized bed slag blocking prevention device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a triggered circulating fluidized bed slag blocking prevention device, comprising a slag cooler body, on which a water supply pipe and a water return pipe are arranged;

[0006] A DCS electronic room DPU cabinet and a host computer are arranged on one side of the slag cooler body. The DCS electronic room DPU cabinet and the host computer are electrically connected. The water supply pipe and the return pipe are both provided with temperature measuring points connected to the DCS electronic room DPU cabinet. The temperature measuring points on the water supply pipe and the return pipe are both installed with temperature measuring components. The temperature measuring components include:

[0007] A temperature sensor and a mounting assembly, wherein the temperature sensor is fixedly mounted on the outside of the water supply pipe through the mounting assembly;

[0008] The protection component is installed on the outside of the temperature sensor through the installation component.

[0009] Preferably, the protection component comprises:

[0010] A protective shell, wherein the protective shell is installed outside the temperature sensor;

[0011] The slider and the limit plate are located inside the protective shell to limit the temperature sensor.

[0012] Preferably, the slider is fixedly connected to the outside of the temperature sensor, the limit plate is fixedly connected to the inside of the protective shell, and a sliding groove matching the slider is provided on a side of the limit plate close to the temperature sensor.

[0013] Preferably, the installation assembly includes:

[0014] A first arc plate and a second arc plate, wherein the first arc plate and the second arc plate are symmetrically mounted on the outer wall of the water supply pipe;

[0015] A threaded sleeve, wherein the outer wall of the threaded sleeve is fixedly inserted and sleeved with the first arc plate, and the bottom of the outer wall of the temperature sensor is threadedly sleeved with the threaded sleeve.

[0016] Preferably, the outer walls of the water supply pipe and the return pipe are both provided with through holes matching the threaded sleeve, the outer wall of the temperature sensor is threadedly sleeved with a locking nut, and the bottom of the locking nut is squeezed and fit with the threaded sleeve.

[0017] Preferably, the sides of the first arc plate and the sides of the second arc plate are both fixedly connected with a first fixing plate, a second fixing plate is arranged on the top of the first fixing plate, and a connecting plate is fixedly connected between the second fixing plate and the protective shell.

[0018] Preferably, a fixing bolt is symmetrically slidably inserted and sleeved on the bottom of the first fixing plate, and a fixing nut is threadedly sleeved on the top of the outer wall of the fixing bolt through the second fixing plate.

[0019] Technical effects and advantages of the utility model:

[0020] The utility model utilizes the coordinated use of a water supply pipe, a return pipe and a temperature measuring component. The temperature measuring component includes a temperature sensor, a mounting component and a protective component. Under the action of the mounting component, the protective component and the temperature sensor can be stably installed on the outside of the water supply pipe and the return pipe, and the protective component can protect the temperature sensor to prevent it from being damaged by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A temperature measuring point location diagram is added to the slag cooler of the utility model.

[0022] Figure 2 This is a schematic diagram of the overall structure of the temperature measuring component of the utility model.

[0023] Figure 3 It is a schematic diagram of the internal structure of the protective shell of the utility model.

[0024] In the figure: 1. slag cooler body; 11. water supply pipe; 12. return pipe; 2. DCS electronic room DPU cabinet; 3. host computer; 4. temperature measuring component; 41. temperature sensor; 42. installation component; 421. first arc plate; 422. second arc plate; 423. threaded sleeve; 424. locking nut; 425. first fixing plate; 426. second fixing plate; 427. connecting plate; 428. fixing bolt; 429. fixing nut; 43. protection component; 431. protection shell; 432. slider; 433. limit plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1-3 The device for preventing slag blocking in a triggered circulating fluidized bed is shown in the figure, comprising a slag cooler body 1, on which a water supply pipe 11 and a water return pipe 12 are arranged, a DCS electronic room DPU cabinet 2 and a host computer 3 are arranged on one side of the slag cooler body 1, the DCS electronic room DPU cabinet 2 and the host computer 3 are electrically connected, and a temperature measuring point connected to the DCS electronic room DPU cabinet 2 is arranged on the water supply pipe 11 and the water return pipe 12, and when a change in the internal temperature difference between the water supply pipe 11 and the water return pipe 12 is detected, the circulating fluidized bed is triggered in time. The circulating fluidized bed slag blockage early warning signal can intervene in the slag blockage in advance, which can reduce the workload of the slag-clearing personnel. The temperature measuring points on the water supply pipe 11 and the return pipe 12 are installed with temperature measuring components 4. The temperature measuring component 4 includes a temperature sensor 41, a protection component 43 and an installation component 42. The temperature sensor 41 is fixedly installed on the outside of the water supply pipe 11 through the installation component 42. The model of the temperature sensor 41 is pt100. The protection component 43 is installed on the outside of the temperature sensor 41 through the installation component 42.

[0027] Furthermore, the protective component 43 includes a protective shell 431, a slider 432 and a limit plate 433. The protective shell 431 is installed on the outside of the temperature sensor 41. The slider 432 and the limit plate 433 are located inside the protective shell 431 to clamp and limit the temperature sensor 41. The protective shell 431 can shield and protect the temperature sensor 41. The slider 432 is fixedly connected to the outside of the temperature sensor 41, and the limit plate 433 is fixedly connected to the inside of the protective shell 431. A sliding groove matching the slider 432 is provided on the side of the limit plate 433 close to the temperature sensor 41. The slider 432 and the limit plate 433 can limit the temperature sensor 41 to prevent it from rotating and causing looseness at its connection.

[0028] In particular, the mounting assembly 42 includes a first arc plate 421, a second arc plate 422 and a threaded sleeve 423. The first arc plate 421 and the second arc plate 422 are symmetrically mounted on the outer wall of the water supply pipe 11. The outer wall of the threaded sleeve 423 is fixedly inserted and sleeved with the first arc plate 421. Arc sealing gaskets are symmetrically arranged on both sides between the first arc plate 421 and the second arc plate 422, which can improve the sealing between the first arc plate 421 and the second arc plate 422 and the water supply pipe 11 and the return pipe 12. The bottom of the outer wall of the temperature sensor 41 is threadedly sleeved with the threaded sleeve 423. The outer walls of the water supply pipe 11 and the return pipe 12 are both provided with through holes matching the threaded sleeve 423, and the bottom of the outer wall of the threaded sleeve 423 is slidably sleeved with the through hole, so that the threaded sleeve 423 can limit the position of the first arc plate 421 and the second arc plate 422 during installation, avoiding deviation during installation of the first arc plate 421 and the second arc plate 422, resulting in extrusion damage between the bottom of the temperature sensor 41 and the inner wall of the through hole. The outer wall of the temperature sensor 41 is threadedly sleeved with a locking nut 424, and the bottom of the locking nut 424 is squeezed and fit with the threaded sleeve 423.

[0029] Furthermore, the side of the first arc plate 421 and the side of the second arc plate 422 are fixedly connected with a first fixing plate 425, a second fixing plate 426 is arranged on the top of the first fixing plate 425, a connecting plate 427 is fixedly connected between the second fixing plate 426 and the protective shell 431, a fixing bolt 428 is symmetrically slidably inserted and sleeved at the bottom of the first fixing plate 425, and a fixing nut 429 is threadedly sleeved through the second fixing plate 426 at the top of the outer wall of the fixing bolt 428, and the fixing bolt 428 and the fixing nut 429 can be fixed to the two fixing plates. The first fixing plate 425 and the second fixing plate 426 can fix not only the first arc plate 421 and the second arc plate 422, but also the protective shell 431. By removing the fixing bolts 428, the first arc plate 421, the second arc plate 422 and the protective shell 431 can be directly disassembled, thereby directly disassembling the temperature sensor 41 without disassembling the connection between the temperature sensor 41 and the threaded sleeve 423, thereby avoiding multiple disassembly of the temperature sensor 41, which may cause friction damage at the connection.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A triggered circulating fluidized bed slag blocking prevention device, comprising a slag cooler body (1), wherein the slag cooler body (1) is provided with a water supply pipe (11) and a water return pipe (12); It is characterized in that A DCS electronic room DPU cabinet (2) and a host computer (3) are arranged on one side of the slag cooler body (1); the DCS electronic room DPU cabinet (2) and the host computer (3) are electrically connected; the water supply pipe (11) and the water return pipe (12) are both provided with temperature measuring points connected to the DCS electronic room DPU cabinet (2); the temperature measuring points on the water supply pipe (11) and the water return pipe (12) are both installed with temperature measuring components (4); the temperature measuring components (4) include: A temperature sensor (41) and a mounting assembly (42), wherein the temperature sensor (41) is fixedly mounted on the outside of the water supply pipe (11) via the mounting assembly (42); A protection component (43), wherein the protection component (43) is installed on the outside of the temperature sensor (41) through the installation component (42).

2. A triggered circulating fluidized bed slag blocking prevention device according to claim 1, characterized in that: The protection component (43) comprises: A protective shell (431), wherein the protective shell (431) is installed outside the temperature sensor (41); A slider (432) and a limit plate (433), wherein the slider (432) and the limit plate (433) are located inside the protective housing (431) to clamp and limit the temperature sensor (41).

3. A triggered circulating fluidized bed slag blocking prevention device according to claim 2, characterized in that: The slider (432) is fixedly connected to the outside of the temperature sensor (41), the limit plate (433) is fixedly connected to the inside of the protective shell (431), and a sliding groove matching the slider (432) is provided on a side of the limit plate (433) close to the temperature sensor (41).

4. A triggered circulating fluidized bed slag blocking prevention device according to claim 3, characterized in that: The mounting assembly (42) comprises: A first circular arc plate (421) and a second circular arc plate (422), wherein the first circular arc plate (421) and the second circular arc plate (422) are symmetrically mounted on the outer wall of the water supply pipe (11); A threaded sleeve (423), wherein the outer wall of the threaded sleeve (423) is fixedly inserted and sleeved with the first arc plate (421), and the bottom of the outer wall of the temperature sensor (41) is threadedly sleeved with the threaded sleeve (423).

5. A triggered circulating fluidized bed slag blocking prevention device according to claim 4, characterized in that: The outer walls of the water supply pipe (11) and the outer walls of the water return pipe (12) are both provided with through holes matching the threaded sleeve (423); the outer wall of the temperature sensor (41) is threadedly sleeved with a locking nut (424); the bottom of the locking nut (424) is pressed and fitted with the threaded sleeve (423).

6. A triggered circulating fluidized bed slag blocking prevention device according to claim 4, characterized in that: The side of the first arc plate (421) and the side of the second arc plate (422) are both fixedly connected to a first fixing plate (425), a second fixing plate (426) is arranged on the top of the first fixing plate (425), and a connecting plate (427) is fixedly connected between the second fixing plate (426) and the protective shell (431).

7. A triggered circulating fluidized bed slag blocking prevention device according to claim 6, characterized in that: A fixing bolt (428) is symmetrically slidably inserted and sleeved on the bottom of the first fixing plate (425), and a fixing nut (429) is threadedly sleeved on the top of the outer wall of the fixing bolt (428) through the second fixing plate (426).

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